Answer:
A) The research revealed that cats, on average, sleep 50% more in a 24-hour period than dogs.
Step-by-step explanation:
This is objective because none of the information presented is an opinion. They have proven the facts and ensured that they were not bias.
This is also using formal language. We can tell that it used formal language because they use words such as "The research revealed" and "On average". It's much more appropriate for an essay.
This would most likely be a great fit for a research essay. Where you would need to not use words such as, "We", "I", or "my".